We at aykit hate data retention and love open-source. shtfy is keeping data storage to a minimum:

All URLs shortified

For shtfy to work correctly, we need to save every URL and it's shortified version.

Hits

We save how often a shortified URL has been visited. Note that we only save the amount of hits.

Piwik visit tracking - anonymised visits

Knowing the amount of people visiting our service is always good for morale. However, we do our best to track as little as possible: We save IPs hitting the main page (ay.vc) and this page (about.html) with the last digits anonymised (192.168.0.xxx). Additionally, we respect your Browser's
Do-Not-Track
setting. If you still don't trust us, we recommend using
Ghostery
or
similar software.